Improvement in machines for warping yarn



G. DRAPER. MACHINE FOR WARPING YARN.

No. 111.523. Patented Feb. '1, 1871.

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GEORGE DRAPER, OF HOPEDALE, MASSACHUSETTS.

Letters Patent No. 111,523, dated February 7, 1871.

IMPROVEMENT IN MACHINES FOR 'WARPING VARN.

The Schedule referred toin these Letters Patent and making part of thespine.

To all persons to whom these presents may conic Be it known that I,Gnoncu DRAPER, of 'Hopedale, of the county of Worcester and State ofMassachusetts, have made a new and useful invention having reference toW'arpers or Machines for \Varping Yarn; and do hereby declare the sametobe fully described in the following specification and represented in theaccompanying drawing, of which Figure 1 is a top view;

Figure 2, a side elevation; and

Figure 3, a front elevation of a portion of a warper with my inventionapplied thereto.

The object of the invention is to enable a warper to be started intooperation without the danger of snarling or breaking the threads oryarns, such as is incident to the common warper when started or set inaction suddenly at full speed.

The invention is also to enable an attendant to turn forward the heavybearing and cylinders of the warper, as occasion may reqnir The usualspeed of the surface of a warper-cylinder is about sixty yards perminute. \Vhen a sudden stoppage of the machine takes place, the momentumgeneratedin the spools causes them to more or less slacken the threadsor yarns. WVhat are termed rising and falling rollers are sometimesemployed to take up the slack yarn, and sometimes the beam is allowed torevolve more or less by its momentum.

My invention applies to either of these operations.

Frictious or devices have been employed to over- .come thesedifiiculties, but such means as have been used heretofore have been moreor less uncertain in their operation and not easy of management. My in?vention, however, requires little experience or skill on the part of theattendant to operate it, and its results are uniform and certain.

In carrying out my invention I combine, with the usual fast-and-looscpulleys and their trains of gears for operating the main cylinder-shaft,another train of gears orv mechanism, substantially as hereinafterdescribed, which, when thrown iuto engagement with the said train whenthe driving-belt is on the loose pulley, will cause the cylinder-shaftto be runat a very much slower rate of speed than what it would receiveflOllltllG main train with the driving-belt on its fast pulley.

I also provide the auxiliary train with a shipper or means of throwingit eitheriuto or out of engagement with the main train, and I combinewith such shipper and the driving-belt shipper a device or mechanism bywhich the latter, while being moved to change the belt fuum the loose tothefas-t pulley, shall so operate the auxiliary-train shipper as todense it to disengage the auxiliary train with the main train.

By means of the auxiliary train the speed of the warps will be reducedto about six yards per minute,

their speed under ordinary circumstances being about ten times as great.The slower speed is to be kept up until the slack may be taken out of,the threads or yarns, and the spools are started when the drivingbelt isto be shifted upon the fast pulley so as to increase the speed to thenormal rate, such taking place without any sudden shock or liability tosnarl or break the threads, and thus obviating a serious evil incidentto warpers as heretofore constructed and-used.

The additional mechanism is of such nature that when the driving-belthas passed so far from the loose pulley upon the fast pulley as toincrease the speed of the main cylinder, a projection of the shipper ofthe belt will, by its action against the shipper of the auxiliary train,force it off its supporting shoulder and allow its retracting springtomove it so as to disengage the auxiliary train from the main train andthereby allow the main cylinder to be run at its greater speed.

In the drawing- A denotes the warper-frame 13, the shaft-or roller,through the agency of which the warp-beam or main cylinder is to berevolved, there being a spurear, 0, fixed on the outer part of suchshaft or roller. I

This gear 0 engages with a spur-pinion, D, fixed on the driving-shah; E,on which is a fast pulley, 1 and a loose pulley, G. The driving-belt isto run on either of these pulleys, as occasion may require, and there isapplied to the frame the usual belt-shipper H, which slides horizontallyand is arranged in the frame in manner as represented.

normal or In carrying out my inveution'I fix to the loose pul-' ley, soas to be revolved with and by it, a spur-gear,

a, and I fix on the driving shaft a gear, I).

I also, on another shaft, 0, arranged in front of the fast-and-loosepulleys and supported in a standard, (I,

fix two gears c j; the larger being to engage with the gear a and thesmaller with the gear I).

The standard I so pivot to an arm, g, (projecting from theframe A,) asto enable such standard to revolve or turn horizontally, and I pivot theshaft 0 loosely in'a shipper or lever, It, arranged against one side ofthe frame A, such lever at its foot having a fulcrum, i. a

The lever or shipper It extends up through a hold- .er, k, fixed to theframe, and provided with a recess or notch, l, shaped as represented intop view in Figure 4, wherein the notch is shown as provided with ashoulder, at.

A helical spring, a, fastened at one end to the frame A, and at theother to the shipper It, serves to draw the shipper in a direction awayfrom the belt-shipper.

.Furthermore, there is a stud, 0, projected from the belt-shipper, suchstud being to bear against the shipper 71 so as to throw it off theshoulder m while the belt-shipper is being moved to transfer thedrivingbelt from the loose to the fast pulley.

My invention is not designed to run the main cylinder at so slow a rateas to admit of the threads of the spools being successively tied to thewarps of the cylinder while in motion, as it would be impracticable toaccomplish such at the rate of speed desirable for starting the'warper.

I make no claim to any invention described in the United States patentNo. 100.070, dated February 22, 1870.-

I claim- 1. In combination .with a \varper a mechanism substantially asdescribed, or its equivalent, for running the warp-cylinder at a fixeduniform rate of speed, such as will enable the slack of the'yarns to betaken up and the spools started before putting into operation themechanism for running such spools at their normal or much faster speed,all being, essentially as liereinbefore explained.

2. In combination with the fast-anddoose pulleys F G of a warper, andtheir train of gears O I) for operating the main cylinder-shaft B, theauxiliary train of gears a I) cf to operate with such main train, and tobe operated by the loose pulley, by means and in manner substantially asdescribed.

3. In combination with the fast-and-loose pulleys F G, and the main andauxiliary trains of gears O D a b a f, their belt-shifters H h, and theshouldered holder k, the spring a, and the stud- 0 applied to the mainand auxiliary belt-shippers, such stud and spring being to'operatc asand for the purpose as explained.

GEORGE DRAPER.

Witnesses:

R. H. EDDY, J. R. SNOW.

